Integer Overflow or Wraparound Affecting torvalds/linux package, versions [5.19,6.18.59)[6.19,7.2.13)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published29 Oct 2026
- disclosed28 Oct 2026
- creditUnknown
Introduced: 28 Oct 2026
NewCVE-2026-99191 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.18.59, 7.2.13 or higher.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound in the calipso_skbuff_setattr process. An attacker can cause incorrect payload length handling in IPv6 headers by forwarding specially crafted BIG TCP packets that exceed or shrink below the maximum IPv6 payload length, potentially impacting network filtering, connection tracking, or traffic shaping subsystems.
Note: The Linux kernel project assigns a CVE to every bug fix it ships, whether or not the bug has been shown to be exploitable. This advisory was generated from that process and has not been individually assessed for exploitability. See the kernel's CVE process documentation: https://github.com/torvalds/linux/blob/master/Documentation/process/cve.rst